Electricity Cost Calculator
The Electricity Cost Calculator estimates how much it costs to run any electrical appliance based on its power rating, how long it runs each day, and your electricity tariff. Understanding your appliance costs helps you identify which devices are driving your electricity bill — and where you can save.
How to Use This Calculator
- 1
Enter the appliance wattage (found on the label or in the manual).
- 2
Enter how many hours per day the appliance is used.
- 3
Enter days per month (default 30).
- 4
Enter your electricity rate in $ per kWh (check your electricity bill).
- 5
Click Calculate to see the monthly cost.
Frequently Asked Questions
Cost = (Watts ÷ 1000) × Hours per day × Days per month × Rate per kWh. For example: 1,500 W electric heater, 2 hours/day, 30 days, at $0.25/kWh = 1.5 × 2 × 30 × 0.25 = $22.50/month.